JP3457683B2 - Flywheel being split - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a split flywheel as described, for example, in DE-A-3721705.

[0002]

2. Description of the Related Art Such a split flywheel has a first inertial mass that can be fixed to an internal combustion engine and a second inertial mass that can be connected to a transmission through a clutch and can be disconnected from the transmission. A mass body, both inertial mass bodies being pivotally supported relative to each other by means of a bearing between them. Between the two inertial mass bodies, there is a damping device for damping the relative rotational movement, which has a force-accumulating member acting in the circumferential direction, which is constructed as a push-coil spring. , Housed in an annular groove member that is at least partially filled with a viscous medium. The annular groove member itself is formed by a part of the first inertial mass body made of a metal plate. In the annular groove member, the second
A disc body made of a metal plate, which is non-rotatably connected to the inertia mass body, protrudes and cooperates with a pushing coil spring in the annular groove member. The ring-shaped members themselves are practically symmetrically arranged or configured with respect to the disc body.

[0003]

Such a flywheel is mainly used in an automobile. However, since the conventional flywheel has a large axial dimension, the internal combustion engine and the transmission are especially in the engine room. Widely used in vehicles that are not horizontally arranged in the vehicle, and therefore the axial mounting space is not extremely limited, that is, the vehicle in which the internal combustion engine and the transmission are vertically arranged. . In other words, in a vehicle in which the internal combustion engine and the transmission are arranged horizontally, the divided flywheel could hardly be used in the past because the mounting space was limited.

Therefore, an object of the present invention is to make the axial dimension of the divided flywheel extremely small so that it can be used even when the internal combustion engine and the transmission are arranged horizontally. Furthermore, the satisfactory function of the clutch, in particular a good torque transmission, is achieved, the production costs are low and the installation is simple.

[0005]

In order to solve this problem, according to the invention, a second inertial mass body projects axially into the space surrounded by the annular groove member, The groove member is arranged radially outward of the friction surface diameter of the clutch. The annular groove member can be offset in a direction away from the internal combustion engine with respect to the first inertial mass body holding it. It is particularly advantageous if the friction surface provided on the second inertial mass for the clutch disc is also axially recessed in the space surrounded by the annular groove member. Furthermore, the disc body is inclined in a direction away from the internal combustion engine at least within the range of the force accumulating member acting in the circumferential direction, and the second inertial mass body is surrounded by the inclined portion of the disc body. It is advantageous if it projects axially into the open space. In this case, an annular groove member having a force accumulating member acting in the circumferential direction, an inclined portion of the disc body, and a second inertial mass body having a friction surface for the clutch disc. , The rolling bearing between both inertial mass bodies can be intermeshed in the axial direction. Further, the inclined portion of the disc body, the friction surface provided on the second inertial mass body for the clutch disc, the rolling bearing, and the facing of the clutch disc are formed by the annular groove member. It may be housed in an enclosed axial space.

In order to further reduce the axial dimension, the wall of the first inertial mass which forms the annular groove member and lies axially within the range of the second inertial mass is Inward in the direction, it is preferable to reach only the radially inward edge of the force-accumulating member acting in the circumferential direction. In this case, the outer edge of the sealing membrane is attached to the inner edge of the enclosure wall with a sealing action, the sealing membrane extending along the part of the second inertial mass which projects into the space surrounded by the annular groove member. It extends and the inner edge is fixed to the disc with a sealing effect. This sealing film, which is significantly thinner than the metal plate forming the ring-shaped groove member, has the following properties after the viscous medium, for example, a pasty medium such as lubricating grease, is partially filled in the inner chamber of the first inertial mass body. It is practically not necessary to receive the centrifugal force exerted by the grease, and it is only necessary to perform a certain degree of sealing action against dust intrusion and a sealing action to prevent the grease from flowing out in an extremely rare case where the grease becomes liquid. Since the seal film can be brought into close contact with the inner edge of the pushing coil spring, the radial dimension of the friction surface of the second inertial mass body can be made sufficiently large, and the seal film can be brought into close contact with the second inertial mass body. And extends inward in the radial direction, the axial dimension is significantly compressed and the second
The friction surface of the pressure plate of the friction clutch attached to the inertial mass can also be located in the space surrounded by the annular groove member.

Further, it is preferable that the inner edge of the sealing film reaches at least at the vent hole formed in the second inertial mass body in the radial direction. This allows the cooling air flow to be guided along the sealing membrane.

In order to increase the cooling effect, the part of the second inertial mass which projects into the space surrounded by the annular groove member, at least in the radially outer section, has a means for discharging heat, For example, cooling air flow generating means or cooling action increasing means can be provided, and for example, fins can be provided or an air passage communicating with the outside can be provided.

In order to allow particularly easy handling and installation and inexpensive production, the split flywheel forms one structural unit with a friction clutch having a clutch disc, the entire structural unit being an internal combustion engine. Be able to be fixed to the crankshaft of the engine. The structural unit also includes rolling bearings between both inertial mass bodies. Further, the structural unit has a supporting flange for the rolling bearing provided on the first inertial mass body, and a fixing screw for fixing the structural unit to the crankshaft in a hole formed in the supporting flange. Is advantageously accommodated. In this case, it is advisable to ensure that the fixing screws are retained in the structural unit so that they are not lost, for example the fixing screws are retained by flexible means and the retaining force of the flexible means is It can be overcome by tightening the fixing screw during.

In this structural unit, the clutch disc is located between the second inertial mass body and the pressure plate of the friction clutch at a position centered in advance with respect to the rotation axis of the crankshaft or pilot bearing. Can be tightened. In this case, holes on the clutch disc or its flange are formed with the same pitch as the holes for the fixing screws for fixing the structural unit to the internal combustion engine, and these holes and the holes for the fixing screws are coaxial with each other. In addition, at the tongue of the disc spring of the friction clutch, there are formed holes for introducing the tightening tool of the fixing screw. These holes are the holes formed in the clutch disc and the rolling. It may be axially overlapped with a hole formed in the bearing flange of the bearing. The holes formed in the disc spring and the clutch disc can be coaxial with the holes formed in the support flange.
However, the holes in the support flange are generally not evenly pitched because the second inertial mass is attached to the crankshaft at a very specific position. The holes of the disc spring and the clutch disc can also be formed with a non-uniform pitch according to the pitch of the holes of the support flange and the crankshaft. However, when the unevenness of the arrangement pitch of the holes of the support flange and the crankshaft is slight, the holes formed in the disc spring are arranged at a uniform pitch, and the fixing screw is tightened with a screw tightening tool. Also has a large diameter, even if the holes formed in the support flange are misaligned,
The screwing tool can be adapted to reach the fixing screw.

Regardless of the arrangement pitch of these holes, it is advantageous if the diameter of the holes formed in the disc spring is smaller than the diameter of the head of the fixing screw. Also, in many cases the hole in the clutch disc may be smaller than the head of the fixing screw. This prevents the fixing screw from falling off in the direction opposite to that of the internal combustion engine or the first inertial mass body by the disc spring or the clutch disc.

Further, the head of the fixing screw is located inside the space surrounded by the friction clutch, and the thread section of the fixing screw is axially inward of the internal combustion engine side boundary surface of the first inertial mass body. Advantageously, the fixing screw is fixed in its length and retained in the structural unit so that it is in the retracted position.

Further, the first inertial mass body supports the pilot bearing, and this pilot bearing is also preferably provided in the space surrounded by the annular groove member.

Thus, the structural unit that is completely assembled in advance can be easily and inexpensively transported and installed, and the work of replacing the clutch disc due to the abrasion of the facing, for example, can be carried out in the usual manner. You can That is, the friction clutch may be screwed to the second inertial mass body. The joining of all other parts can be done by rivets or welding.

Furthermore, in order to still reduce the axial and radial dimensions of the structural unit, if the friction clutch is adapted to be actuated by a disengagement bearing via a disc spring and a pressure plate, the disc The spring has a ring-like shape 2 radially inward of the outer edge area which loads the pressure plate.
It is rotatably supported between two swivel fulcrums, and a swivel fulcrum on the side opposite to the clutch cover is provided on the ring-shaped member. The torque transmitting / separating member is fixed to the pressure plate at a position radially inward of the swivel fulcrum, and the torque transmitting / separating member is substantially tangential from the annular member to the fixing point on the pressure plate. It is possible that the fixed portion of the pressure transmitting / separating member on the pressure plate is located radially inward of the friction surface of the friction clutch. By such means, the projections that have been conventionally required for fixing the torque transmitting / separating member, that is, the projections projecting outward in the radial direction outside the friction surface in the radial direction are unnecessary. The turning fulcrum on the side opposite to the clutch cover can be provided integrally with the annular member.

It is also advantageous if the ring-shaped member is fixed to the clutch cover by means of a radially inwardly directed connection between the torque transmitting and separating member. This fixing can be performed by inserting the hole formed in the connecting portion into the rivet protrusion provided on the clutch cover and deforming the end portion of the rivet protrusion.

With such a structure, a relatively long radial spring arm can be generated between the ring-shaped member and the clutch cover, and when the disc spring wears out, the torque transmission / separation member of the ring-shaped member is generated. Can be adjusted afterwards.

Further, at least some holes formed in the base of the tongue of the disc spring are extended inward in the radial direction, and the torque transmitting / separating member is fixed to the pressure plate. It is advantageous to be overlapped with. This allows the torque transmission / separation member to be easily riveted to the pressure plate.

In this case, each torque transmitting / separating member is riveted to the pressure plate at two points, so that two adjacent holes of the disc spring have an extension inward in the radial direction. It is advantageous to do so.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be specifically described below with reference to FIGS.

In FIG. 1, a flywheel 1 has a first inertial mass body 2 and a second inertial mass body 3 which can be fixed to a crankshaft (not shown) of an internal combustion engine. These inertial masses 2 and 3 are supported on one another by rolling bearings 4 and are thereby rotatable relative to one another. A friction clutch 5 having a clutch disc 6 is attached to the second inertial mass body 3 by which the transmission (also not shown) is connected to the crankshaft of the internal combustion engine and Cut off from.

The damping device 7 acting between both inertial masses 2 and 3 is constituted by a push coil spring 8. These push coil springs 8 are housed in an annular groove member 9. The annular groove member 9 is at least partially filled with a viscous medium such as grease or pure lubricant. In the annular groove member 9, the second inertial mass body 3
The arm 11 of the disk body 10 rigidly connected to the arm protrudes into the arm. The arm 11 cooperates with the pushing coil spring 8,
As a result, the relative rotational movement of both inertial mass bodies 2 and 3 is damped. The annular groove member 9 is integrally formed with the first inertial mass body 2 made of a metal plate. The first inertial mass 2 is radially flat from the inner edge to approximately the annular groove member 9 which is offset relative to the flat area of the inertial mass in a direction away from the internal combustion engine. Has been done. The arm 11 of the disc body 10 is also inclined at the annular groove member 9 in a direction away from the internal combustion engine. The substantially flat area of the disc 10 is very close to the first inertial mass 2. The inertial mass part 3'of the second inertial mass 3 has a friction surface 12 against the clutch disc 6, the annular groove member 9 itself being more radial than the inertial mass part 3'and thus the friction surface 12. It is provided outside.

An annular groove member 9 and an arm 11 of the disc body 10.
, The inertial mass portion 3'having the friction surface 12 of the second inertial mass 3 and the rolling bearing 4 are closely packed as shown in the drawing, and the inclined arm 1 of the disc body 10 is
The inertial mass part 3 ′ with the friction surface 12 of the first and second inertial masses 3 and the rolling bearing 4 are housed together in an axial space surrounded by an annular groove part 9. Also facing 1 of both clutch discs 6
The friction surface 15 of the pressure plate 16 is also formed in the annular groove 9
It is located in an axial space surrounded by.

In order to have such an axially compressed structure, the enclosure wall 17 which is part of the annular groove portion 9 and which is located axially in the region of the second inertial mass 3 is radial. It only reaches the radially inner edge of the push coil spring 8. At the inner edge of the surrounding wall 17, the seal film
The outer edge of 8 is attached with a sealing action, and this sealing film 18 passes between the pushing coil spring 8 and the axially extending portion of the second inertial mass body 3 and then along the disc body 10. And extends in the range 19 of the disc body 10 and is fixed with a sealing action. The second inertial mass body 3
The air holes 20 formed in the outer peripheral surface of the disk body 10 extend radially outward to reach the area 19 of the disc body 10.

It is preferable that cooling fins or air passages 21 are formed at least in the outer region in the radial direction of the inertial mass portion 3'to facilitate the outward flow of the cooling air flow due to the centrifugal force of rotation. This cooling air flow is arrow 2
2 can flow radially outwards or through holes 23 formed in the clutch cover 24 of the friction clutch 5. Hole 23 in clutch cover 24
Are distributed along the circumference of the clutch cover 24 and are formed in a large number, and an inertial weight 25 for causing uniform rotation can be attached to some of the holes 23.

The flywheel shown in FIG. 1, which is divided into two inertial mass bodies, and the friction clutch 5 having the clutch disk 6 form one structural unit A,
The structural unit A can be preassembled as such a unit, transported to an automobile production factory, stored in a factory warehouse, and easily screwed and attached to a crankshaft of an internal combustion engine in an automobile production line. This structural unit A already contains the rolling bearing 4.
That is, the rolling bearing 4 is fixed to the support flange 26 provided on the first inertial mass body 2. Furthermore,
A fixing screw 28, for example, a cap screw is already inserted in the hole 27 of the support flange 26. In this case, the head of the fixing screw 28 is located axially between the tongue 29 of the disc spring 30 of the friction clutch 5 and the clutch disc 6, and the thread section 28a of the fixing screw 28 has the first inertial The length is set so as not to protrude from the boundary surface 2a of the mass body 2 on the internal combustion engine side.
In order to hold the fixing screw 28 in the structural unit A in this state, a flexible member 31 is provided on the clutch disc 6. The flexible member 31 sandwiches the head of the fixing screw 28 between the flexible member 31 and the tongue portion 29 of the disc spring 30, but its holding force is overcome when the fixing screw 28 is tightened. It is such a size.

In summary, the clutch disc 6 is arranged between the pressure plate 16 and the friction surface 12 of the second inertial mass body 3 so that the structural unit A is coaxial with the crankshaft to which the fixing screw 28 is attached. The head of the fixing screw 28 is pushed through the hole 32 formed in the clutch disc 6 when the structural unit A is attached to the crankshaft.

As can be seen from FIG. 2, a hole 33 is also formed in the tongue 29 of the disc spring 30 by a notch. These holes 33 are for inserting a tool for tightening the fixing screw 28. In the pre-assembled structural unit A, the holes 33 of the disc spring 30, the holes 32 of the clutch disc 6, and the holes 27 of the support flange 26 overlap each other in the axial direction, and the arrangement pitch of the holes 27 is not uniform. Even in this case, the fixing screw 28 can be screwed to the crankshaft without any trouble by using a screw tightening tool that penetrates the hole 33 of the disc spring 30 and the hole 32 of the clutch disc 6.

The diameter of the hole 33 of the disc spring 30 is equal to that of the fixing screw 2
It is smaller than the diameter of the head of No. 8 and the fixing screw 28 does not come out through the hole 33 of the disc spring 30.

The structural unit A has a pilot bearing 34, and after the structural unit A is attached to the crankshaft, the end of the transmission shaft is inserted into the pilot bearing 34.

The structural unit A as described above remarkably simplifies the flywheel assembling work since it eliminates the need for the centering process of the clutch disc, and repair work, for example, the replacement work of the clutch disc 6. When performing the operation, remove the screw 3a as usual and remove the friction clutch 5
Can be easily removed.

The friction clutch 5, which is actuated by the shut-off bearing via the disc spring 30 and the pressure plate 16, has at its clutch cover 24 a swivel fulcrum 3 for the disc spring 30.
5 and 36. The turning fulcrum 36 is formed on an annular member 37 (FIG. 2) connected to the clutch cover 24, and a leaf spring-shaped torque transmitting / separating member 38 is integrally connected to the annular member 37. The torque transmitting / separating member 38 extends substantially tangentially and is connected to the pressure plate 16 by rivets 39 and 40 at a position radially inward of the friction surface of the clutch disk 6, and the torque of the clutch cover 24 is connected. To the pressure plate 16. The ring-shaped member 37 and by extension the torque transmission / separation member 3
8 is made of an elastic metal plate, and the torque transmitting / separating member 38 also has a function of separating the pressure plate 16.

The ring-shaped member 37 further has a large number of connecting portions 41 protruding inward in the radial direction, and is fixed to the clutch cover 24 via these connecting portions 41. In this case, the connecting portion 41 has a hole 42, and the rivet protrusion 43 penetrating the hole 42 from the clutch cover 24.
Is formed by extrusion deformation, and the ring-shaped member 37
To the clutch cover 24, and insert the hole 42
The rivet protrusion 43, and then the rivet protrusion 4
3 is deformed and riveting is performed.

A notch 4 is formed at the base of the tongue 29.
4 are formed, some of these notches 44 are rivets 39 and 40 radially inward.
The disk spring 30 is riveted to the clutch cover 24, and then the torque transmission / separation member 38 and the pressure plate 16 can be riveted without any trouble.

Further, a large number of holes 45 are formed in the outer edge area of the disk spring 30 so that the cooling air flow can flow through these holes 45 without any trouble.

When the arrangement intervals of the holes 27 of the support flange 26 are considerably irregular and the pitch of the fixing screws 28 and the pitch of the tongue-shaped portions 29 of the disc springs 30 are greatly deviated, 2 as shown by hole 27a,
The associated tongue 29a can be cut at a location 29b that is radially outward from the hole 27 by an amount corresponding to the protrusion of the head of the fixing screw 28. Alternatively, instead of this, the entire tongue 29a can be cut at the point 29c. However, this makes the weight imbalance large, so it is preferable to leave the tongue-shaped portion 29a up to the location 29b.

The present invention is not limited to the illustrated embodiment, but can be implemented in various modes.

[0038]

As described above, the flywheel 1 having the two inertial mass bodies 2 and 3 according to the present invention is divided.
In the space where the inertial mass 3 on the transmission side is surrounded by a ring-shaped groove member 9 containing a damping device 7 for damping the relative rotational movement of both inertial masses 2, 3. Since the annular groove member 9 is arranged radially outward of the friction surface diameter of the friction clutch 5, it has the advantage that the axial dimension of the flywheel 1 can be made extremely small. is there.

[Brief description of drawings]

FIG. 1 is an axial cross-section of a flywheel with a friction clutch and consisting of two inertial masses.

FIG. 2 is a view of the disc spring viewed in the direction of arrow line II-II in FIG.

[Explanation of symbols]

1 flywheel, 2 inertial mass body, 2a boundary surface, 3 inertial mass body, 3'inertial mass body part, 3a
Screw, 4 rolling bearing, 5 friction clutch,
6 clutch disk, 7 shock absorber, 8 pushing coil spring, 9 ring groove member, 10 disk body, 11 arm, 12 friction surface, 13 and 14 facing,
15 friction surface, 16 pressure plate, 17 surrounding wall, 1
8 sealing film, 19 range, 20 ventilation holes, 21
Air passage, 22 arrow, 23 hole, 24 clutch cover, 25 inertia weight, 26 support flange,
27 and 27a holes, 28 fixing screws, 28a
Thread section, 29 and 29a tongue, 29b and 29c locations, 30 disk spring, 31 flexible member, 32 and 33 holes, 34 pilot bearing,
35 and 36 Turning fulcrum, 37 Annular member, 38
Torque transmitting / separating member, 39 and 40 rivets, 41 connecting parts, 42 holes, 43 rivet protrusions, 44 notches, 45 holes, A structural unit

─────────────────────────────────────────────────── --Continued from the front page (31) Priority claim number P4027593.0 (32) Priority date August 31, 1990 (August 31, 1990) (33) Priority claim Germany (DE) (31) Priority claim number P4027614.7 (32) Priority date August 31, 1990 (August 31, 1990) (33) Priority claim country Germany (DE) (31) Priority claim number P4027629.5 (32) Priority date August 31, 1990 (August 31, 1990) (33) Priority claiming country Germany (DE) (31) Priority claim number P4041709.3 (32) Priority date December 24, 1990 ( Dec. 24, 1990 (33) Priority claiming country Germany (DE) (31) Priority claim number P4041722.0 (32) Priority date Dec. 24, 1990 (Dec. 24, 1990) (33) Priority Claiming Country Germany (DE) (72) Inventor Johann Yeh Le Federal Republic of Germany Baden - Baden-Sophie en-Strasse 11 (56) Reference Patent Sho 63-26423 (JP, A) JitsuHiraku Akira 63-94341 (JP, U) (58 ) investigated the field (Int.Cl. ⁷ , DB name) F16F 15/30 F16F 15/123

Claims (51)

(57) [Claims] 1. A division comprising a first inertial mass body that can be fixed to a driven shaft of an internal combustion engine and a second inertial mass body that can be connected to a transmission through a clutch and can be disconnected from the transmission. A flywheel in which both inertial masses are pivotable relative to each other by means of a bearing device between them and against the shock absorber, the shock absorber acting in a circumferential direction. A force accumulating member which is housed in an annular space, the annular space being formed by a portion of the first inertial mass body, Of the inertial mass has a bowl-shaped structural part, which has a radially extending ring-shaped region for fixing to a driven shaft of an internal combustion engine. Is radially outward,
It has an axially extending part for forming an annular space, to which the radially inwardly extending enclosure wall is fixed, the second inertial mass Has a range extending in the axial direction, and the range extending in the axial direction is projected into the structural space surrounded by the annular space in the axial direction and is surrounded by the force accumulating member. The flywheel has been divided to feature. 2. An annular space having a force accumulating member acting in the circumferential direction provided therein, a range of the second inertial mass body, and a bearing device for both inertial mass bodies are axially arranged. 2. A split flywheel according to claim 1, wherein the flywheels interdigitate with each other and the bearing device lies at least substantially within the axial extension of the annular space. 3. The split flywheel according to claim 1, wherein the force accumulating member and the bearing device are at least in substantially the same axial position with respect to the rotation axis of the split flywheel. 4. The friction surface provided on the second inertial mass for engaging the clutch with the clutch disc is also housed in a structural space surrounded by an annular space. Split flywheel according to any one of claims 1 to 3. 5. A second inertial mass body having an annular space having a force accumulating member acting in the circumferential direction therein and a friction surface for engagement with the clutch disc. The split flywheel according to any one of claims 1 to 4, wherein and the bearing device for both inertial mass bodies are interdigitated with each other in the axial direction. 6. An axial structure in which a second inertial mass having a friction surface for a clutch disc and a bearing device are surrounded by an axially extending part of a pot-shaped structural part. The divided flywheel according to any one of claims 1 to 5, which is housed in a space. 7. The split according to claim 1, wherein the facing of the clutch disc is also housed in an axial structural space surrounded by a pot-shaped structural part. Flying flywheel. 8. A friction clutch pressure plate provided on the second inertial mass body has at least a friction surface portion projecting into an axial structural space surrounded by an annular space. 1 to claim 7
The divided flywheel according to paragraph. 9. An enclosure, which forms an annular space and extends radially inward, simply
A split flywheel according to any one of claims 1 to 8, which reaches at least approximately at the inner diameter of the force-accumulating member acting in the circumferential direction. 10. A sealing membrane is connected to a surrounding wall extending inward in the radial direction, the sealing membrane protruding into a structural space surrounded by an annular space. A split flywheel according to any one of claims 1 to 9, which extends along a portion of two inertial masses. 11. A split flywheel according to claim 10, wherein the sealing membrane extends at least approximately in the radial direction up to the ventilation holes provided in the second inertial mass. 12. The part of the second inertial mass which projects into the structural space surrounded by the annular space has means for improving heat dissipation, at least in the radially outer section. The divided flywheel according to any one of claims 1 to 11, wherein: 13. The split flywheel of claim 12 wherein the means for improving heat dissipation are fins. 14. The split flywheel of claim 12 wherein the means for improving heat dissipation is an external air passage. 15. A structural unit is formed with a friction clutch having a clutch disc, and the structural unit as a whole can be fixed to a crankshaft of an internal combustion engine. The divided flywheel according to paragraph. 16. The split flywheel according to claim 15, wherein the structural unit also includes a bearing device between both inertial mass bodies. 17. The structural unit has a supporting flange for a rolling bearing provided on the first inertial mass body, and the structural unit is fixed to the crankshaft in a hole formed in the supporting flange. 17. The split flywheel of claim 16, wherein a fixed screw is included. 18. A split flywheel according to claim 17, wherein the fixing screws are retained in the structural unit in a secure manner. 19. A split flywheel according to claim 17 or claim 18, wherein the fixing screws are held by flexible means. 20. The clutch disc is clamped between the second inertial mass body and the pressure plate of the friction clutch at a position centered beforehand on the axis of rotation of the crankshaft. 20. A split flywheel according to any one of claims 15 to 19. 21. The clutch disc is formed with holes having the same pitch as holes for fixing screws for fixing the structural unit to the internal combustion engine, so that these holes and the holes for fixing screws overlap each other, 21. A split flywheel according to any one of claims 15 to 20, wherein the clutch disc is clamped between the second inertial mass and the pressure plate of the clutch. 22. At the tongue of the disc spring of the clutch, holes for introducing a screwing tool for a fixing screw are formed, and these holes are formed in the clutch disc and bearings. 22. A split flywheel according to any one of claims 15 to 21, which axially overlaps a hole formed in the support flange of the device. 23. A split flywheel according to claim 22, wherein the holes formed in the disc spring and the clutch disc are coaxial with the holes formed in the support flange. 24. The holes formed in the disc spring are arranged at a uniform pitch and have a diameter larger than that of the fastening tool of the fixing screw, and the holes formed in the support flange are displaced. 23. The split flywheel of claim 22, wherein the fastening tool is adapted to reach the fastening screw. 25. The split flywheel according to claim 22, wherein the diameter of the hole formed in the disc spring is smaller than the diameter of the head of the fixing screw. 26. The head of the fixing screw is located inside the structural space surrounded by the clutch, and the thread section of the fixing screw is axially inward of the internal combustion engine-side boundary surface of the first inertial mass body. 26. A split fly according to any one of claims 15 to 25, wherein the fixing screw is fixed in its length so as to be retracted and is retained in the structural unit. wheel. 27. The split flywheel according to claim 1, wherein the first inertial mass supports a pilot bearing. 28. The split flywheel according to claim 1, wherein the pilot bearing is also axially provided in a structural space surrounded by an annular space. . 29. The split flywheel according to claim 15, wherein the clutch is removably fixed to the structural unit. 30. A friction clutch for connecting and disconnecting an internal combustion engine to a transmission is a friction clutch operated by pushing a disc spring, the disc spring being radially outward. Of the pressure plate in the range of, and inward in the radial direction, two fulcrums arranged in a circle −
It is pivotably supported between a fulcrum on the side of the clutch cover and a fulcrum on the side opposite to the clutch cover, and the fulcrum of rotation on the side opposite to the clutch cover is supported by an annular member. A leaf spring-like torque transmission / separation member integrally connected to the member extends from the member, and the torque transmission / separation member is fixed to the pressure plate at a position radially inward of the turning fulcrum. 30. A split flywheel according to any one of claims 1 to 29. 31. The split flywheel of claim 30, wherein the torque transmitting and separating member extends from the annular member to a fixed location on the pressure plate in a generally chordal manner. 32. The divided flywheel according to claim 30 or 31, wherein the fixing portion of the torque transmitting / separating member on the pressure plate is located radially inward of the friction surface of the friction clutch. 33. The method according to any one of claims 30 to 32, wherein the ring-shaped member is fixed to the clutch cover by a connecting portion facing inward in the radial direction between the torque transmission / separation member. The flywheel that is split. 34. The fixing of the annular member is performed by a rivet protrusion provided on the clutch cover.
The flywheel is split as described. 35. The split flywheel according to claim 33 or 34, wherein the annular member is fixed to the clutch cover by a hole formed in the connecting portion. 36. At least some of the holes formed in the base of the tongue of the disc spring extend radially inward to secure the torque transmitting and separating member to the pressure plate. Claim 30 to Claim 35 which overlap with
The divided flywheel according to any one of items 1 to 7. 37. The method according to claim 30, wherein each torque transmission / separation member is fixed to the pressure plate at two locations.
The divided flywheel according to any one of 5 to 5. 38. The split flywheel according to claim 30, wherein a turning fulcrum on the side opposite to the clutch cover is integrally provided on the annular member. 39. A first unit that can be fixed to a driven shaft of an internal combustion engine.
A split flywheel having an inertial mass body and a second inertial mass body connectable to a transmission, both inertial mass bodies being rotatable relative to each other via a bearing device. Between the two inertial masses, which are supported, a rotary vibration damper is provided, the flywheel together with the clutch having the clutch disc forming one preassembleable structural unit. The structural unit can be attached to the driven shaft of the internal combustion engine by means of a fixing means which can be guided through the hole in the first inertial mass body, the clutch disc being pre-centered in the structural unit. 2. The split flywheel according to claim 1 , wherein the split flywheel is held in a fixed position and has at least a hole for operating the fixing means by means of a tool. 40. A first unit that can be fixed to a driven shaft of an internal combustion engine.
A split flywheel having an inertial mass body and a second inertial mass body connectable to a transmission, both inertial mass bodies being rotatable relative to each other via a bearing device. Between the two inertial masses, which are supported, a rotary vibration damper is provided, the flywheel together with the clutch having the clutch disc forming one preassembleable structural unit. The structural unit can be attached to the driven shaft of the internal combustion engine by means of a fixing means which can be guided through the hole in the first inertial mass body, the clutch disc being pre-centered in the structural unit. The clutch is held in its open position and the clutch has a clutch cover, a pressure plate and a disc spring which can be clamped between these two members. It has a hole in the range of the tongue facing inwardly in the direction, according to claim 1, thereby so can at least operating fixing means by a tool
The flywheel is split as described . 41. A split flywheel according to claim 39 or claim 40, wherein the bearing device comprises a rolling bearing. 42. The structural unit has a supporting flange for a bearing provided on the first inertial mass body, and a fixing screw for fixing the structural unit to the driven shaft on the supporting flange. 42. A split flywheel according to any one of claims 39 to 41, wherein a hole is formed to pass through. 43. A split flywheel according to any one of claims 39 to 42, wherein the fixing means are built into the structural unit. 44. A split flywheel according to any one of claims 39 to 43, in which the fixing means are retained in the structural unit in a secure manner. 45. A hole is formed in the clutch disk,
The holes are arranged at the same pitch as the screw holes for attaching the first inertial mass to the driven shaft, and the clutch disc is tightened between the second inertial mass and the pressure plate of the clutch. 45. The split according to any one of claims 39 to 44, in which the threaded holes and the holes in the clutch discs overlap one another when the rotary vibration damper is not loaded. Is a flywheel. 46. Between the tongues adjacent to each other in the radial extension range of the tongues of the disc spring of the clutch,
Holes are provided for the insertion of screws and / or at least one screwing tool, and--as viewed in the axial direction--these holes are the holes of the clutch disc for the fastening means and the first inertial mass. 46. A split flywheel according to any one of claims 39 to 45, wherein the split flywheel overlaps the holes of the. 47. A split flywheel according to any one of claims 39 to 46, in which the hole in the disc spring is smaller than the head of the fixing screw. 48. The head of the fixing screw is located inside the structural space surrounded by the clutch, and the thread section of the fixing screw is retracted axially with respect to the internal combustion engine-side boundary surface of the first inertial mass body. 48. A screw according to any one of claims 39 to 47, in which the fixing screw forming the fixing means is positioned and is held in the structural unit so that it is located. The flywheel that is split. 49. A split flywheel according to claim 39, wherein the first inertial mass carries a pilot bearing for the transmission input shaft. 50. A split flywheel according to claim 39, wherein the clutch is removably fixed to the structural unit. 51. A friction clutch for connecting and disconnecting an internal combustion engine to a transmission is a friction clutch operated by pushing a disc spring, the disc spring being radially outward. Of the pressure plate in the range of, and inward in the radial direction, two fulcrums arranged in a circle −
The split flywheel according to any one of claims 39 to 50, which is rotatably supported between a fulcrum on the clutch cover side and a fulcrum on the side opposite to the clutch cover.